Consideration on Elastic Vibration Control of a Magnetically Levitated Thin Steel Plate Using Sliding Mode Control

We have proposed a magnetic levitation control system for a sheet steel and confirmed the realization by a digital control experiment. However, because of the strong nonlinearity of the attractive force of the electromagnet and the various uncertainties in the circuit current such as changes in the...

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Published inNihon Kikai Gakkai ronbunshū. C Vol. 74; no. 740; pp. 823 - 832
Main Authors HASEGAWA, Shinya, OSHINOYA, Yasuo, ISHIBASHI, Kazuhisa
Format Journal Article
LanguageJapanese
Published The Japan Society of Mechanical Engineers 2008
Subjects
Continuous Model
Elastic Vibration
Electromagnetic Actuator
Electromagnetic Levitation
Optimal Control
Sliding Mode Control
Steel Plate
Vibration Control
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Summary:We have proposed a magnetic levitation control system for a sheet steel and confirmed the realization by a digital control experiment. However, because of the strong nonlinearity of the attractive force of the electromagnet and the various uncertainties in the circuit current such as changes in the resistance due to heat generation of the electromagnet, stability of levitation has not been sufficiently ensured. In this study, we aim to develop a noncontact support system for thin steel plates with high robustness using sliding mode control, which is tolerant to factors such as disturbances within control signals and external forces affecting the system. As a result, it was verified that the suppressive effect of the sliding mode control on disturbances is sufficient, and that the application of the continuous model provides the construction of a system with robustness to the disturbance of the external forces.
Bibliography:ObjectType-Article-2
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content type line 23
ISSN:0387-5024
1884-8354
DOI:10.1299/kikaic.74.823